Session with Michael Duch

February 12th, we did a session with Michael Duch on double bass, exploring auto-adaptive use of our techniques. We were interested in seeing how the crossadaptive techniques could be used for personal timbral expansion for a single player. This is a step back in complexity from the crossadaptive interplay, but is interesting for two reasons: One is to check how useful our techniques of modulation is in a setting with more traditional performer control. Where there is only one performer modulating himself, there is a closer relationship between performer intention and timbral result. And two: the reason to do this specifically with Michael is that we know from his work with Lemur and other settings that he intently and intimately relates to the performance environment, the resonances of the room and the general ambience. Due to this focus, we also wanted to use live convolution techniques where he first records an impulse response and then himself play through the same filter. This exposed one feature needed in the live convolver, where one might want to delay the activation of the new impulse response until its recording is complete (otherwise we most certainly will get extreme resonances while recording, since the filter and the exitation is very similar). That technical issue aside, it was musically very interesting to hear how he explored resonances in his own instrument, and also used small amounts of detuning to approach beating effects in the relation between filter and exitation signal. The self-convolution also exposes parts of the instrument spectrum that usually is not so noticeable, like bassy components of high notes, or prominent harmonics that otherwise would be perceptually masked by their merging into the full tone of the instrument.


Take 1,  autoadaptive exploration
Take 2,  autoadaptive exploration

Self convolution


Self-convolution take 1
Self-convolution take 2
Self-convolution take 3
Self-convolution take 4



Self-convolution take 5


Self-convolution take 6

Session with David Moss in Berlin

Thursday February 1st, we had an enjoyable session at the Universität der Kunste in Berlin. This was at the Grunewaldstraße campus and generously hosted by professor Alberto De Campo. This was a nice opportunity to follow up on earlier collaboration with David Moss, as we have learned so much about performance, improvisation and music in general from him on earlier occations.
Earlier the same week I had presented the crossadaptive project for prof. De Campo’s students of computational art and performance with complex systems. This environment of arts and media studies at UdK was particularly conductive to our research, and we had some very interesting discussions.

David Moss – vocals
Øyvind Brandtsegg – crossadaptive processing, vocals
Alberto De Campo – observer
Marija Mickevica – observer, and vocals on one take

More details on these tracks will follow, currently I just upload them here so that the involved parties might get access.


Initial exploration, the (becoming) classic reverb+delay crossadaptive situation
Test session, exploring one effect only
Test session, exploring one effect only  (2)
First take
Second take
Third take

Then we did some explorations of David telling stories, live convolving with Øyvind’s impulse responses.


Story 1
Story 2

And we were lucky that student Marija Mickevica wanted to try recording live impulse responses while David was telling stories. Here’s an example:


Story with Marija’s impulse responses

And a final take with David and Øyvind, where all previously tested effects and crossadaptive mappings were enabled. Selective mix of effects and modulations was controlled manually by Øyvind during the take.


Final combined take